* PROJECT: ReactOS kernel
* FILE: drivers/filesystem/ntfs/dirctl.c
* PURPOSE: NTFS filesystem driver
- * PROGRAMMER: Eric Kohl
+ * PROGRAMMERS: Eric Kohl
+ * Hervé Poussineau (hpoussin@reactos.org)
+ * Pierre Schweitzer (pierre@reactos.org)
*/
/* INCLUDES *****************************************************************/
#define NDEBUG
#include <debug.h>
-/* GLOBALS *****************************************************************/
-
-
/* FUNCTIONS ****************************************************************/
-static NTSTATUS
+/*
+ * FUNCTION: Retrieve the standard file information
+ */
+static
+NTSTATUS
NtfsGetStandardInformation(PNTFS_FCB Fcb,
PDEVICE_OBJECT DeviceObject,
PFILE_STANDARD_INFORMATION StandardInfo,
PULONG BufferLength)
-/*
- * FUNCTION: Retrieve the standard file information
- */
{
- DPRINT("NtfsGetStandardInformation() called\n");
+ UNREFERENCED_PARAMETER(DeviceObject);
+
+ DPRINT1("NtfsGetStandardInformation(%p, %p, %p, %p)\n", Fcb, DeviceObject, StandardInfo, BufferLength);
- if (*BufferLength < sizeof(FILE_STANDARD_INFORMATION))
- return(STATUS_BUFFER_OVERFLOW);
+ if (*BufferLength < sizeof(FILE_STANDARD_INFORMATION))
+ return STATUS_BUFFER_TOO_SMALL;
- /* PRECONDITION */
- ASSERT(StandardInfo != NULL);
- ASSERT(Fcb != NULL);
+ /* PRECONDITION */
+ ASSERT(StandardInfo != NULL);
+ ASSERT(Fcb != NULL);
- RtlZeroMemory(StandardInfo,
- sizeof(FILE_STANDARD_INFORMATION));
+ RtlZeroMemory(StandardInfo,
+ sizeof(FILE_STANDARD_INFORMATION));
- StandardInfo->AllocationSize = Fcb->RFCB.AllocationSize;
- StandardInfo->EndOfFile = Fcb->RFCB.FileSize;
- StandardInfo->NumberOfLinks = 0;
- StandardInfo->DeletePending = FALSE;
- StandardInfo->Directory = NtfsFCBIsDirectory(Fcb);
+ StandardInfo->AllocationSize = Fcb->RFCB.AllocationSize;
+ StandardInfo->EndOfFile = Fcb->RFCB.FileSize;
+ StandardInfo->NumberOfLinks = Fcb->LinkCount;
+ StandardInfo->DeletePending = FALSE;
+ StandardInfo->Directory = NtfsFCBIsDirectory(Fcb);
- *BufferLength -= sizeof(FILE_STANDARD_INFORMATION);
- return(STATUS_SUCCESS);
+ *BufferLength -= sizeof(FILE_STANDARD_INFORMATION);
+
+ return STATUS_SUCCESS;
}
-static NTSTATUS
+static
+NTSTATUS
NtfsGetPositionInformation(PFILE_OBJECT FileObject,
PFILE_POSITION_INFORMATION PositionInfo,
PULONG BufferLength)
{
- DPRINT("NtfsGetPositionInformation() called\n");
+ DPRINT1("NtfsGetPositionInformation(%p, %p, %p)\n", FileObject, PositionInfo, BufferLength);
+
+ if (*BufferLength < sizeof(FILE_POSITION_INFORMATION))
+ return STATUS_BUFFER_TOO_SMALL;
- if (*BufferLength < sizeof(FILE_POSITION_INFORMATION))
- return(STATUS_BUFFER_OVERFLOW);
+ PositionInfo->CurrentByteOffset.QuadPart = FileObject->CurrentByteOffset.QuadPart;
- PositionInfo->CurrentByteOffset.QuadPart =
- 0;
-// FileObject->CurrentByteOffset.QuadPart;
+ DPRINT("Getting position %I64x\n",
+ PositionInfo->CurrentByteOffset.QuadPart);
- DPRINT("Getting position %I64x\n",
- PositionInfo->CurrentByteOffset.QuadPart);
+ *BufferLength -= sizeof(FILE_POSITION_INFORMATION);
- *BufferLength -= sizeof(FILE_POSITION_INFORMATION);
- return(STATUS_SUCCESS);
+ return STATUS_SUCCESS;
}
-static NTSTATUS
+static
+NTSTATUS
NtfsGetBasicInformation(PFILE_OBJECT FileObject,
PNTFS_FCB Fcb,
PDEVICE_OBJECT DeviceObject,
PFILE_BASIC_INFORMATION BasicInfo,
PULONG BufferLength)
{
- DPRINT("NtfsGetBasicInformation() called\n");
+ PFILENAME_ATTRIBUTE FileName = &Fcb->Entry;
- if (*BufferLength < sizeof(FILE_BASIC_INFORMATION))
- return(STATUS_BUFFER_OVERFLOW);
+ DPRINT1("NtfsGetBasicInformation(%p, %p, %p, %p, %p)\n", FileObject, Fcb, DeviceObject, BasicInfo, BufferLength);
-#if 0
- CdfsDateTimeToFileTime(Fcb,
- &BasicInfo->CreationTime);
- CdfsDateTimeToFileTime(Fcb,
- &BasicInfo->LastAccessTime);
- CdfsDateTimeToFileTime(Fcb,
- &BasicInfo->LastWriteTime);
- CdfsDateTimeToFileTime(Fcb,
- &BasicInfo->ChangeTime);
+ if (*BufferLength < sizeof(FILE_BASIC_INFORMATION))
+ return STATUS_BUFFER_TOO_SMALL;
- CdfsFileFlagsToAttributes(Fcb,
- &BasicInfo->FileAttributes);
-#endif
+ BasicInfo->CreationTime.QuadPart = FileName->CreationTime;
+ BasicInfo->LastAccessTime.QuadPart = FileName->LastAccessTime;
+ BasicInfo->LastWriteTime.QuadPart = FileName->LastWriteTime;
+ BasicInfo->ChangeTime.QuadPart = FileName->ChangeTime;
- *BufferLength -= sizeof(FILE_BASIC_INFORMATION);
+ NtfsFileFlagsToAttributes(FileName->FileAttributes, &BasicInfo->FileAttributes);
- return(STATUS_SUCCESS);
+ *BufferLength -= sizeof(FILE_BASIC_INFORMATION);
+
+ return STATUS_SUCCESS;
}
-static NTSTATUS
+/*
+ * FUNCTION: Retrieve the file name information
+ */
+static
+NTSTATUS
NtfsGetNameInformation(PFILE_OBJECT FileObject,
PNTFS_FCB Fcb,
PDEVICE_OBJECT DeviceObject,
PFILE_NAME_INFORMATION NameInfo,
PULONG BufferLength)
-/*
- * FUNCTION: Retrieve the file name information
- */
{
- ULONG NameLength;
+ ULONG BytesToCopy;
+
+ UNREFERENCED_PARAMETER(FileObject);
+ UNREFERENCED_PARAMETER(DeviceObject);
+
+ DPRINT1("NtfsGetNameInformation(%p, %p, %p, %p, %p)\n", FileObject, Fcb, DeviceObject, NameInfo, BufferLength);
+
+ ASSERT(NameInfo != NULL);
+ ASSERT(Fcb != NULL);
+
+ /* If buffer can't hold at least the file name length, bail out */
+ if (*BufferLength < (ULONG)FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]))
+ return STATUS_BUFFER_TOO_SMALL;
- DPRINT("NtfsGetNameInformation() called\n");
+ /* Save file name length, and as much file len, as buffer length allows */
+ NameInfo->FileNameLength = wcslen(Fcb->PathName) * sizeof(WCHAR);
- ASSERT(NameInfo != NULL);
- ASSERT(Fcb != NULL);
+ /* Calculate amount of bytes to copy not to overflow the buffer */
+ BytesToCopy = min(NameInfo->FileNameLength,
+ *BufferLength - FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]));
- NameLength = wcslen(Fcb->PathName) * sizeof(WCHAR);
-// NameLength = 2;
- if (*BufferLength < sizeof(FILE_NAME_INFORMATION) + NameLength)
- return(STATUS_BUFFER_OVERFLOW);
+ /* Fill in the bytes */
+ RtlCopyMemory(NameInfo->FileName, Fcb->PathName, BytesToCopy);
- NameInfo->FileNameLength = NameLength;
- memcpy(NameInfo->FileName,
- Fcb->PathName,
- NameLength + sizeof(WCHAR));
-// wcscpy(NameInfo->FileName, L"\\");
+ /* Check if we could write more but are not able to */
+ if (*BufferLength < NameInfo->FileNameLength + (ULONG)FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]))
+ {
+ /* Return number of bytes written */
+ *BufferLength -= FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]) + BytesToCopy;
+ return STATUS_BUFFER_OVERFLOW;
+ }
- *BufferLength -=
- (sizeof(FILE_NAME_INFORMATION) + NameLength + sizeof(WCHAR));
+ /* We filled up as many bytes, as needed */
+ *BufferLength -= (FIELD_OFFSET(FILE_NAME_INFORMATION, FileName[0]) + NameInfo->FileNameLength);
- return(STATUS_SUCCESS);
+ return STATUS_SUCCESS;
}
-static NTSTATUS
+static
+NTSTATUS
NtfsGetInternalInformation(PNTFS_FCB Fcb,
PFILE_INTERNAL_INFORMATION InternalInfo,
PULONG BufferLength)
{
- DPRINT("NtfsGetInternalInformation() called\n");
+ DPRINT1("NtfsGetInternalInformation(%p, %p, %p)\n", Fcb, InternalInfo, BufferLength);
- ASSERT(InternalInfo);
- ASSERT(Fcb);
+ ASSERT(InternalInfo);
+ ASSERT(Fcb);
- if (*BufferLength < sizeof(FILE_INTERNAL_INFORMATION))
- return(STATUS_BUFFER_OVERFLOW);
+ if (*BufferLength < sizeof(FILE_INTERNAL_INFORMATION))
+ return STATUS_BUFFER_TOO_SMALL;
- /* FIXME: get a real index, that can be used in a create operation */
- InternalInfo->IndexNumber.QuadPart = 0;
+ InternalInfo->IndexNumber.QuadPart = Fcb->MFTIndex;
- *BufferLength -= sizeof(FILE_INTERNAL_INFORMATION);
+ *BufferLength -= sizeof(FILE_INTERNAL_INFORMATION);
- return(STATUS_SUCCESS);
+ return STATUS_SUCCESS;
}
+static
+NTSTATUS
+NtfsGetNetworkOpenInformation(PNTFS_FCB Fcb,
+ PDEVICE_EXTENSION DeviceExt,
+ PFILE_NETWORK_OPEN_INFORMATION NetworkInfo,
+ PULONG BufferLength)
+{
+ PFILENAME_ATTRIBUTE FileName = &Fcb->Entry;
+
+ DPRINT1("NtfsGetNetworkOpenInformation(%p, %p, %p, %p)\n", Fcb, DeviceExt, NetworkInfo, BufferLength);
+
+ if (*BufferLength < sizeof(FILE_NETWORK_OPEN_INFORMATION))
+ return STATUS_BUFFER_TOO_SMALL;
+
+ NetworkInfo->CreationTime.QuadPart = FileName->CreationTime;
+ NetworkInfo->LastAccessTime.QuadPart = FileName->LastAccessTime;
+ NetworkInfo->LastWriteTime.QuadPart = FileName->LastWriteTime;
+ NetworkInfo->ChangeTime.QuadPart = FileName->ChangeTime;
+
+ NetworkInfo->EndOfFile = Fcb->RFCB.FileSize;
+ NetworkInfo->AllocationSize = Fcb->RFCB.AllocationSize;
+
+ NtfsFileFlagsToAttributes(FileName->FileAttributes, &NetworkInfo->FileAttributes);
+
+ *BufferLength -= sizeof(FILE_NETWORK_OPEN_INFORMATION);
+ return STATUS_SUCCESS;
+}
+
+static
+NTSTATUS
+NtfsGetSteamInformation(PNTFS_FCB Fcb,
+ PDEVICE_EXTENSION DeviceExt,
+ PFILE_STREAM_INFORMATION StreamInfo,
+ PULONG BufferLength)
+{
+ ULONG CurrentSize;
+ FIND_ATTR_CONTXT Context;
+ PNTFS_ATTR_RECORD Attribute;
+ NTSTATUS Status, BrowseStatus;
+ PFILE_RECORD_HEADER FileRecord;
+ PFILE_STREAM_INFORMATION CurrentInfo = StreamInfo, Previous = NULL;
+
+ if (*BufferLength < sizeof(FILE_STREAM_INFORMATION))
+ return STATUS_BUFFER_TOO_SMALL;
+
+ FileRecord = ExAllocatePoolWithTag(NonPagedPool, DeviceExt->NtfsInfo.BytesPerFileRecord, TAG_NTFS);
+ if (FileRecord == NULL)
+ {
+ DPRINT1("Not enough memory!\n");
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ Status = ReadFileRecord(DeviceExt, Fcb->MFTIndex, FileRecord);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Can't find record!\n");
+ ExFreePoolWithTag(FileRecord, TAG_NTFS);
+ return Status;
+ }
+
+ BrowseStatus = FindFirstAttribute(&Context, DeviceExt, FileRecord, FALSE, &Attribute);
+ while (NT_SUCCESS(BrowseStatus))
+ {
+ if (Attribute->Type == AttributeData)
+ {
+ CurrentSize = FIELD_OFFSET(FILE_STREAM_INFORMATION, StreamName) + Attribute->NameLength * sizeof(WCHAR) + wcslen(L"::$DATA") * sizeof(WCHAR);
+
+ if (CurrentSize > *BufferLength)
+ {
+ Status = STATUS_BUFFER_OVERFLOW;
+ break;
+ }
+
+ CurrentInfo->NextEntryOffset = 0;
+ CurrentInfo->StreamNameLength = (Attribute->NameLength + wcslen(L"::$DATA")) * sizeof(WCHAR);
+ CurrentInfo->StreamSize.QuadPart = AttributeDataLength(Attribute);
+ CurrentInfo->StreamAllocationSize.QuadPart = AttributeAllocatedLength(Attribute);
+ CurrentInfo->StreamName[0] = L':';
+ RtlMoveMemory(&CurrentInfo->StreamName[1], (PWCHAR)((ULONG_PTR)Attribute + Attribute->NameOffset), CurrentInfo->StreamNameLength);
+ RtlMoveMemory(&CurrentInfo->StreamName[Attribute->NameLength + 1], L":$DATA", sizeof(L":$DATA") - sizeof(UNICODE_NULL));
+
+ if (Previous != NULL)
+ {
+ Previous->NextEntryOffset = (ULONG_PTR)CurrentInfo - (ULONG_PTR)Previous;
+ }
+ Previous = CurrentInfo;
+ CurrentInfo = (PFILE_STREAM_INFORMATION)((ULONG_PTR)CurrentInfo + CurrentSize);
+ *BufferLength -= CurrentSize;
+ }
+
+ BrowseStatus = FindNextAttribute(&Context, &Attribute);
+ }
+
+ FindCloseAttribute(&Context);
+ ExFreePoolWithTag(FileRecord, TAG_NTFS);
+ return Status;
+}
-NTSTATUS NTAPI
-NtfsFsdQueryInformation(PDEVICE_OBJECT DeviceObject,
- PIRP Irp)
/*
* FUNCTION: Retrieve the specified file information
*/
+NTSTATUS
+NtfsQueryInformation(PNTFS_IRP_CONTEXT IrpContext)
{
- FILE_INFORMATION_CLASS FileInformationClass;
- PIO_STACK_LOCATION Stack;
- PFILE_OBJECT FileObject;
- PNTFS_FCB Fcb;
- PVOID SystemBuffer;
- ULONG BufferLength;
-
- NTSTATUS Status = STATUS_SUCCESS;
-
- DPRINT("NtfsQueryInformation() called\n");
-
- Stack = IoGetCurrentIrpStackLocation(Irp);
- FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
- FileObject = Stack->FileObject;
- Fcb = FileObject->FsContext;
-
- SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
- BufferLength = Stack->Parameters.QueryFile.Length;
-
- switch (FileInformationClass)
- {
- case FileStandardInformation:
- Status = NtfsGetStandardInformation(Fcb,
- DeviceObject,
- SystemBuffer,
- &BufferLength);
- break;
-
- case FilePositionInformation:
- Status = NtfsGetPositionInformation(FileObject,
- SystemBuffer,
- &BufferLength);
- break;
-
- case FileBasicInformation:
- Status = NtfsGetBasicInformation(FileObject,
- Fcb,
- DeviceObject,
- SystemBuffer,
- &BufferLength);
- break;
-
- case FileNameInformation:
- Status = NtfsGetNameInformation(FileObject,
- Fcb,
- DeviceObject,
- SystemBuffer,
- &BufferLength);
- break;
-
- case FileInternalInformation:
- Status = NtfsGetInternalInformation(Fcb,
- SystemBuffer,
- &BufferLength);
- break;
-
- case FileAlternateNameInformation:
- case FileAllInformation:
- Status = STATUS_NOT_IMPLEMENTED;
- break;
-
- default:
- DPRINT("Unimplemented information class %u\n", FileInformationClass);
- Status = STATUS_INVALID_PARAMETER;
- }
-
- Irp->IoStatus.Status = Status;
- if (NT_SUCCESS(Status))
- Irp->IoStatus.Information =
- Stack->Parameters.QueryFile.Length - BufferLength;
- else
- Irp->IoStatus.Information = 0;
-
- IoCompleteRequest(Irp, IO_NO_INCREMENT);
-
- return(Status);
+ FILE_INFORMATION_CLASS FileInformationClass;
+ PIO_STACK_LOCATION Stack;
+ PFILE_OBJECT FileObject;
+ PNTFS_FCB Fcb;
+ PVOID SystemBuffer;
+ ULONG BufferLength;
+ PIRP Irp;
+ PDEVICE_OBJECT DeviceObject;
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ DPRINT1("NtfsQueryInformation(%p)\n", IrpContext);
+
+ Irp = IrpContext->Irp;
+ Stack = IrpContext->Stack;
+ DeviceObject = IrpContext->DeviceObject;
+ FileInformationClass = Stack->Parameters.QueryFile.FileInformationClass;
+ FileObject = IrpContext->FileObject;
+ Fcb = FileObject->FsContext;
+
+ SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
+ BufferLength = Stack->Parameters.QueryFile.Length;
+
+ if (!ExAcquireResourceSharedLite(&Fcb->MainResource,
+ BooleanFlagOn(IrpContext->Flags, IRPCONTEXT_CANWAIT)))
+ {
+ return NtfsMarkIrpContextForQueue(IrpContext);
+ }
+
+ switch (FileInformationClass)
+ {
+ case FileStandardInformation:
+ Status = NtfsGetStandardInformation(Fcb,
+ DeviceObject,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FilePositionInformation:
+ Status = NtfsGetPositionInformation(FileObject,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FileBasicInformation:
+ Status = NtfsGetBasicInformation(FileObject,
+ Fcb,
+ DeviceObject,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FileNameInformation:
+ Status = NtfsGetNameInformation(FileObject,
+ Fcb,
+ DeviceObject,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FileInternalInformation:
+ Status = NtfsGetInternalInformation(Fcb,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FileNetworkOpenInformation:
+ Status = NtfsGetNetworkOpenInformation(Fcb,
+ DeviceObject->DeviceExtension,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FileStreamInformation:
+ Status = NtfsGetSteamInformation(Fcb,
+ DeviceObject->DeviceExtension,
+ SystemBuffer,
+ &BufferLength);
+ break;
+
+ case FileAlternateNameInformation:
+ case FileAllInformation:
+ DPRINT1("Unimplemented information class %u\n", FileInformationClass);
+ Status = STATUS_NOT_IMPLEMENTED;
+ break;
+
+ default:
+ DPRINT1("Unimplemented information class %u\n", FileInformationClass);
+ Status = STATUS_INVALID_PARAMETER;
+ }
+
+ ExReleaseResourceLite(&Fcb->MainResource);
+
+ if (NT_SUCCESS(Status))
+ Irp->IoStatus.Information =
+ Stack->Parameters.QueryFile.Length - BufferLength;
+ else
+ Irp->IoStatus.Information = 0;
+
+ return Status;
}
/* EOF */
projects / reactos.git / blobdiff